Improvement in pipe-wrench



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Letters Patent No.' 94,107, Zatezl August 24, 1869.

IMPROVEMENT IN PIPE-WRENCH.

The Schedule referred tc in these Letters Patent and making part of thesame.

To all whom thirty concern:

Beit known that I, MICHAEL Hasrnvos, of Brooklyn, in the county ofKings, and State of New York, have invented a new and useful Improvementin lipe-Vrenches, of which the following isa full, clear, and exactdescription, reference being had t0 theaccoinpanying drawing, forlnin`part of this specit'ication, and in which- Figure l represents alongitudinal view of a pipewrench, constructed in accordance with myimprovenient, ani

Figure 2, a transverse section of the same, through the line a: a: iniig-1.

Similar letters of reference indicate corresponding parte.

My improvement relates to pipe-wrenches, in which the outer jaw ispivoted to the handle forl operation in connection with an inner jaw ortooth, in such manner as that the wrench is made to firmly grasp thearticle to be turned, and to readily release'itself at each backwardturn of the lever handle; and

The invention consists in a combination, with the outer pivoted jaw, ofan inner jaw ortooth, arranged to freely slide on or along the shank ofthe pivoted jaw, and a loose support or stop to the inner jaw, iitted toslide on the lever-handle, and set up bya nut iitting a screw-thread onsaid handle, to adjust the impieinent to operate on different diametersor lsizes of work, which combina-tion of parts forms a most simple,elicient, and durable pipe-wrench.

Referring to the' accompanying thawing- A represents the outer jaw orclaw, pivoted, as at a., to the lever-handle B, and havingr fitted tofreely slide on its shank b, by means of a strap-like projection, c, theinner jaw 0r tooth C, which is so shaped ordisposed that its tail-endrests against aloosc supporting collar or stop, D, fitted to freelyslide on the inner or forward end of the lever-handle.

This loose collar is guided, in 4being slid along the leverhandle, bymeans of a feather, lr, on it, made to tit a groove, s, in the lever,and said collar supported or adjusted to bear up against the tail-end ofthe iuner jaw or tooth C, by means of a nut, E, arranged to iit ascrew-thread, d, cut on the forward end of the lever.

From this description it will be obvious that, on turning the nut Ebackward or forward, as. desired, the jaws are readily adjusted tooperate on different ysites-of work; also, that a firm grasp of thepipe, or y other work, is secured when working the lever D, as

indicated bythe arrow m, and the wrench made to release its grasp whenswinging the handle back to The combination with the outer jaw or clawA, pivoted to the lever-handle B, of the inner jaw or tooth C, fitted tofreely slide on the shank ofthe outer jaw, the freely-slidingsupporting-collar or stop D, and the nut E, arranged to iit ascrew-thread ou the forward end et' the lever-handle, substantially asspecified.

MIO'l-[AEL HASTINGS.

\Vitnesses:

FRED. HAYNns,

J'. l Comms.

